Typographical machine.



G. MUEHLEISEN.

TYPOGRAPHICAL MACHINE. APPLICATION FILED MAY 23, 1914.

Patented Apr. 27, 1915.

51 M 4 (1 HoumaaS THE NORRIS PETERS cn PHOTO-LITHQ. WASH/NC ran. 0.

CARL MUEHLEISEN, OF BER-LIN,

GERMANY, ASSIGNOR TO lVIERGENTI-IALER LINOTYPE COMPANY, A CORPORATION OFNEW YORK.

TYPOGRAPHICAL MACHINE.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed May 23, 1914. Serial No. 840,445.

To all whom it may concern.

Be it known that I, CARL MUEI-ILEISEN, a citizen of the United States,residing at Chauseestrasse 23, Berlin, N. 4, in the German Empire, haveinvented new and useful Improvements in Typographical Machines, of whichthe following is a specification.

My invention relates to typographical machines, such as linotypemachines of the general organization represented in U. S. Letters Patentto O. Mergenthaler, No. 436,532, wherein circulating matrices are storedin a channeled magazine, released therefrom in the order in which theircharacters are to appear in print and then assembled in line, thecomposed line transferred to the face of a mold, the mold filled withmolten metal to form a slug or linotype against the matrices whichproduce type characters thereon, and the matrices thereafter returnedthrough a distributing mechanism to the magazine from which theystarted. The release of the matrices from the magazine is efiected by aseries of escapements, one for each of its channels, the escapementsbeing controlled from a keyboard mechanism, and each comprising apivoted lever and two pawls which are moved thereby alternately into andout of the magazine. Ordinarily, these pawls are made of rectangularform, or square in cross section, and the magazine and theescapement-supporting bar are consequently provided with similarlyformed slots or openings to receive them. The manufacture of the partswith such square slots is complicated and expensive, and particularly asthey must be arranged in different angular positions to correspond tothe convergence of the magazine channels. Furthermore, in actualpractice, it frequently happens that in mounting the escapements thepawls will not enter the slots properly, or work freely and smoothlytherein, and also that their faces will not be presented squarelyagainst the ends of the downcom- -ing matrices.

This has necessitated the filing and fitting of the parts by hand,resulting in much inconvenience and loss of time.

To overcome the above objections, I propose to make the pawls ofcylindrical form, or circular in cross section; and I find from actualexperience that this gives a much cheaper construction of the parts,easier assemblage, and better action. The magazine plate, instead ofbeing a complicated one with differently situated rectangular slots, maynow be a simple one having a series of round holes bored through it,which holes may be exactly located, and made speedily and at littlecost. The construction of the escapement supporting bar is equallysimple'and inexpensive, involving merely the milling out of the groovesto receive the escapement levers, and the boring of a series of holesfor the pawls. The parts may be assembled easily and quickly, and arepractically certain to require no fitting or alteration. The pawls,being round, always present the proper surface to the downcomingmatrices without regard to the angle at which they approach.

In the accompanying drawing: Figure 1 is a vertical section takenthrough the magazines, etc., of a linotype machine, having my inventionapplied thereto; Fig. 2 is a plan view of a magazine with its top plateremoved to show the convergence of the channels therein; Fig. 3 is adetail of the escapement supporting bar; and Fig. 4 is a perspective ofone of the escapements detached.

Referring to the drawing, I have shown my invention as applied to amachine employing two magazines A and B containing matrices X, and whichare movably arranged so that one or the other may be brought intooperative relation to the assembling devices C. The magazine consists asusual of parallel top and bottom plates formed on their inner faces withlongitudinal grooves D to guide the edges of the mat rices, thesegrooves converging toward the forward end of the magazine (see Fig. 2).The magazines are provided with escapements, each comprising a rockinglever E and two pawls F and G located at opposite ends of the lever andwhich are projected alternately into the magazine through openings Htherein to control the release of the matrices. The pawls F and G areformed at their lower ends with flat disk-shaped bearing surfaces orportions seated in corresponding recesses in the lever E. Theescapements are mounted in series in a supporting bar I, which is formedwith a series of grooves J to receive the lovers E, and with a series ofopenings K to receive usualv way.

the pawls F and G, all the levers E being pivoted upon a wire or rod Lwhich ex- I tends throughout the length of the bar.

The parts so far described are of the customary construction except inthe respects later to be pointed out. v

The escapements may be operated in any suitable manner. The mechanismshown in the drawing comprises a series of pivoted levers M, havingtheir rear arms arranged to engage the forward arms of the escapement.levers E, and their forward arms in position to be acted upon by acorresponding series of: reciprocating rods N, which are operated fromthe keyboard mechanism in the Springs 0 act upon the rear arms. of thelevers E and serve to hold them in, and return them to theirnormalposition of rest,as shown in Fig. -1.'

Passing now to my improvement, it is to be. noted that. the escapementpawls F and Gr are of cylindrical form, or circular in crossssection,and. that the openings H in the magazines andthe openings J in thesupporting bar I are. circular, or in the form of round holes to receivethe pawls. As before stated, this construction of the parts dispenseswith the necessity for accurate fitting and insures the smooth and easyaction of the eseapementswhich is required in their operation. It.should be further noted that the holes H in the magazine are of lessdiameter thanthe width of the grooves D therein, the purpose being toavoid engage ment of the matrices with these openings during theirpassage through the magazine.

WhileI have shown my invention as appliedto the particular kind ofmachine described, it will be obvious that it may be adapted to otherkinds of machines, such as typesetters, typecasters, and the like, whichemploytype or dies instead of matrices, and further; that the form andarrangement .of the parts'may be varied to suit the new conditions metin such. machines. Generally speaking, I desire it to be understood thatI do not limit myself to any particular form or embodiment, except in sofar as specified in the claims.

Having thusdescribed my invention, its construction and mode ofoperation, what. I claim and desire to secure by Letters Patent of theUnited States, is as follows:

1.. An escapement for typographical machines comprising acylindricalfstem or pawl tov engage the type or matrices.

, 2. An escapement for typographical machines. comprising an operatinglever and a Copies: this. patent may be obtained for cylindrical stem orpawl to engage. the type or matrices, said pawl being formed with a flatdisk-shaped bearing surface seated in said lever.

3. An escapement for typographical machines consisting of an operatinglever and two cylindrical pawls pivotally connected thereto to engagethe type or matrices alternately.

4. In a typographical machine, the combination of a magazine formed withgrooves wherein the type or matrices travel on their edges, andcylindrical escapement pawls actingthrough the bottoms of said groovesto control the release of type or matrices from the magazine.

5.. A magazine for linotype machines formed with a groove wherein thematrices travel on their edges, and further with a circular openingextending through the bottom of said groove to receive a cylindrical.escapement pawl.

6. A magazine for linotype machines formed with a groove wherein thematrices travel on their edges, and further with a circular openingextending through the bottom of said groove and less. in diameter than.the width of said groove, for the purpose described.

'7. In a typographical machine, the combination of a magazine formedwith a series of grooves wherein the type or matrices travel 011 theiredges, and further with a series of circular openings extending throughthe bot-toms of said grooves, with a series of escapements. comprisingcylindrical pawls acting through the openings in the magazine tocontrol, the release of the type or matrices therefrom. v

. 8. An escapement-supporting bar provided with circular openings toreceive cylindrical escapement pawls;

9. In a typographical machine, the combination of a series of:escapements, each comprising a pivoted lever'and two cylindrical pawlsseated therein and arranged at opposite sides, of its pivot,.and asupporting bar therefor formed. with a series of grooves wherein thelevers are mounted, and with a series of circular openings leading intosaid grooves to receive the cylindrical pawls.

In testimony whereof, I have afiixed my signature in presence of twowitnesses.

CARL MUEHLEISEN. WVitnesses:

HENRY HAsrnR, IVOLDEMAR HAUPT.

five cents each,,by;. addressing the, Commissioner of, Patents,.

Washington, It 03- I v

